A process for making sugarfree maltitol sweets

Abstract: Manufacture of sugarfree maltitol sweets by heating a concentrated aqueous solution of maltitol including at least 50% by weight of solid maltitol, the balance being other sugar alcohols, at atmospheric pressure to a tempe- rature in the range 190-250 °C, and preferably 200-210 °C, and then working the resulting mass into sweets in the usual manner.

Description: This invention concerns a process for making sugarfree sweets or pastilles which consist of at least 50% by weight of maltitol, the balance being other sugar alcohols, flavourings, optionally colour and optionally a little water. In the sugar confectionary industry the term "boiled sugar" is used for the well-known hard sugar sweets which have a glass-like appearance and a crisp consistency. Such boiled sugar sweets traditionally consist of a mixture of saccharose and glucose syrup, which has been dehydrated by boiling. The traditional manufacture of sugar sweets in the sweet boiling industry consists in boiling at 173-180 °C and atmospheric pressure, following which the heated dewatered sugar mass is allowed to cool until it assumes a plastic consistency, and it is then kneaded together with optional colour and flavourings on a suitable substrate (best an iron table coated by a hide). If desired, air is then introduced into the mass by repeated pulling from a hook to provide a silky gloss, and finally sausages of the mass are cut into sweets which are cooled to room temperature by means of blowers. The sweets obtain a very fine, hard and crisp consistency, but they yellow and become dark and slightly bitter if the heating is not sufficiently rapid, i.e. the heating period is too long. Modern industrial manufacture of sugar sweets takes place by de-watering of the sugar syrup in vacuum at a lower temperature, following which flavourings and optionally colour are added and, if desired, air is introduced into the mass, which in a so-called lump roll is then heated again and pulled out into a string which is moulded into sweets by machine rolling or cutting. However, this does not impart the same fine consistency and taste to the sweets as boiling. For the manufacture of sugarfree sweets of boiled sugar type it is usual to replace the mixture of saccharose and glucose syrup with sorbitol syrups, optionally containing mannitol, or by hydrogenated starch hydrolysates. However, these mixtures have certain drawbacks; the sorbitol syrups because they are too liquid and therefore have to be hot-poured into sweet moulds, and also crystallisation phenomena may occur owing to the high content of sorbitol; the hydrogenated starch hydrolysates because they are less sweet and moreover have a not insignificant cariogenic nature. Furthermore, sorbitol is converted into glucose during digestion and is therefore not suitable for diabetics. Since the sweetening effect and nature of the disaccharide alcohol maltitol resembles sucrose very much, and maltitol is hardly absorbed and utilized by the digestive organs and cannot be fermented by the microorganisms in the mouth, it has been attempted to make sugarfree sweets of maltitol syrup. It is stated in SE published application 452 623 that "e.g. amorphous, substantially anhydrous toffees can be obtained by boiling a water-containing maltitol solution at 180-190 °C, but the toffees must be stored in a moisture-tight container together with a drying agent owing to their high hygroscopicity and deliquescence, which causes great difficulty in the handling of the toffees". In a guide on the use of maltitol for the making of sweets the supplier of a plurality of maltitol syrups, Cerestar A/S, gives the following recipe: "CONDITIONS OF PRODUCTION Boil the sweet mass at about 168 °C and apply vacuum for 5-8 minutes to obtain a moisture content below 1.0%, preferably 0.5-0.8%. For "Maltidex®080", the manufacturing temperature may be reduced to about 155 °C. Moulding or plastic shaping. For the latter, cooling of the sweet mass is necessary (or 25 minutes) to obtain a shaping temperature of about 70 °C. Wrap the sugar pieces as soon as possible after shaping. Be sure of good protection by precise wrapping and/or packaging." Thus, it is necessary to wrap the maltitol sweets individually to ensure that they do not absorb water, deliquesce and stick together. Furthermore, the maltitol sweets manufactured till now have a tough toffee-like consistency. Document EP-A-0 533334 discloses a process for the production of hard candy comprising maltitol. It has now surprisingly been found according to the invention that if a concentrated aqueous maltitol solution is heated at atmospheric pressure (so-called boiling) to a temperature of 190-250 °C and is then cooled and worked into sweets in a traditional manner, then the maltitol sweets become non-hygroscopic, they do not stick together, and they get an improved hard and crisp consistency, which brings out the flavour better. Furthermore, they do not yellow, even when stored for an extended period of time. Accordingly, the process of the invention is characterized by heating a concentrated aqueous solution of maltitol comprising at least 50% by weight of solid maltitol, the balance being other sugar alcohols, at atmospheric pressure to a temperature in the range 190-250 °C, and preferably 200-210 °C, and then working the resulting mass into sweets in the usual manner. The further working into sweets generally comprises allowing the heated dewatered maltitol mass to cool until it assumes a plastic consistency and then kneading it together with optional colour and flavourings, and, if desired, introducing air into the mass and pulling the mass into a string which is shaped to sweets. The process of the invention is extremely suitable in connection with the traditional manufacture of sweets of the boiled sugar type, but it also gives good results in connection with industrial sweet manufacture by reheating and pressing in a lump roll and subsequent shaping to sweets by machine rolling or cutting. The maltitol syrups which are used as starting materials in the process of the invention, are commercial products, e.g. "Maltidex®080" having 70-71% solids, of which min. 82% is maltitol and max. 5% is sorbitol, and "Maltidex®100" including 74-75% solids, of which 74-77% is maltitol and max. 2.5% is sorbitol, which are available from Cerestar Scandinavia A/S, Holte, Denmark. Owing to their sweet taste and their hard and crisp consistency like normal sugar sweets, and because they are hardly absorbed and digested in the organism, the maltitol sweets made by the process of the invention are particularly suitable for diabetics. The process of the invention is illustrated more fully by the following example. EXAMPLE 25 kg of "Maltidex®080" are heated in an open pot to about 200 °C and are cooled immediately afterwards by 10-20 °C on a cold table (a steel table cooled by water at about 14 °C and air blower). While the mass is positioned on the table, colour is added if desired, and then the mass is collected and placed on an iron table covered by a hide. It is allowed to cool here until it assumes a plastic consistency, following which it is flattened, flavourings are added and the mass is kneaded together. Immediately afterwards air is introduced into the mass by repeated pulling of it from a hook to provide a silky gloss. Finally, the sausages are cut to sweets, and they are cooled to room temperature by means of blowers. The maltitol sweets thus produced have the same hard and crisp consistency as usual sugar sweets, which brings out the flavour. They do not stick together, and can be stored and sold as ordinary sugar sweets.

Claims: A process for making sugarfree sweets or pastilles which consists of at least 50% by weight of maltitol, the balance being other sugar alcohols, flavourings, optionally colour and optionally a little water, characterized by heating a concentrated aqueous solution of maltitol including at least 50% by weight of solid maltitol, the balance being other sugar alcohols, at atmospheric pressure to a temperature in the range 190-250 °C, and preferably 200-210 °C, following which the resulting mass is worked into sweets in the usual manner. A process according to claim 1, characterized by allowing the heated dewatered maltitol mass to cool until it assumes a plastic consistency, and then kneading it together with optional colour and flavourings, following which, if desired, air is introduced into the mass, and the mass is pulled into a string which is shaped into sweets. A process according to claim 1 or 2, characterized by using as the starting material a commercial maltitol syrup selected among "Maltidex®080" and "Maltidex®100", available from Cerestar Scandinavia A/S, Skovlytoften 33, DK-2840 Holte, Denmark.

Inventors: SOEMOD MICHAEL MARTIN, SOEMOD, MICHAEL MARTIN
Applicants: SOEMODS BOLCHER FRA DEN GAMLE, SOEMODS BOLCHER, FRA DEN GAMLE FABRIK APS
Application year: 1994
Main classification: A23G3
IPC codes: A23G3